Water → 6-chloro-4'-[5-chloro-2-(1-ethyl-1-hydroxycarbonyl-propoxy)-phenyl]-2'-(5-chloro-2-methyl-phenyl) spiro[3H-indole-3,3'-piperidine]-2,6'(1H)-dione

HRID 504568Notes

Reaction equation

[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:33][C:34]([CH2:41][CH3:42])([C:37]([O:39]C)=[O:38])[CH2:35][CH3:36])=[C:6]([CH:8]2[CH2:13][C:12](=[O:14])[NH:11][CH:10]([C:15]3[CH:20]=[C:19]([Cl:21])[CH:18]=[CH:17][C:16]=3[CH3:22])[C:9]32[C:30]2[C:25](=[CH:26][C:27]([Cl:31])=[CH:28][CH:29]=2)[NH:24][C:23]3=[O:32])[CH:7]=1.[Li+].[OH-].O>CO>[Cl:31][C:27]1[CH:26]=[C:25]2[NH:24][C:23](=[O:32])[C:9]3([CH:8]([C:6]4[CH:7]=[C:2]([Cl:1])[CH:3]=[CH:4][C:5]=4[O:33][C:34]([CH2:41][CH3:42])([C:37]([OH:39])=[O:38])[CH2:35][CH3:36])[CH2:13][C:12](=[O:14])[NH:11][CH:10]3[C:15]3[CH:20]=[C:19]([Cl:21])[CH:18]=[CH:17][C:16]=3[CH3:22])[C:30]2=[CH:29][CH:28]=1

Participants

Conditions

Temperature: 40 °C

Procedure

A mixture of racemic (2′S,3S,4′R)-4′-[5-chloro-2-(1-ethyl-1-methoxycarbonyl-propoxy)-phenyl]-6-chloro-2′-(5-chloro-2-methyl-phenyl)spiro[3H-indole-3,3′-piperidine]-2,6′(1H)-dione (100 mg, 0.159 mmol), LiOH (19.87 mg, 0.8 mmol), H2O (2 mL) and methanol (3 mL) was heated at 40° C. for 4 h. Then methanol was removed by vacuum. The aqueous solution was acidified to “PH” 1-2 by addition of concentrated hydrochloride acid. The precipitate was collected by filtration and purified by Prep-HPLC to give the title compound as a white solid (50 mg).

Workup

customThen methanol was removed by vacuum
additionby addition of concentrated hydrochloride acid
filtrationThe precipitate was collected by filtration
custompurified by Prep-HPLC

Sources & evidence

ORD record: ord-a66eba025b5a45178994d2562158d756
Source dataset: uspto-grants-2010_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07776875B2

Reaction notes

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